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Replica Hublot Square Bang

Our hublot square bang replica collection features 6 models of Hublot’s most geometric and contemporary line, launched in 2022. The Square Bang takes the Big Bang’s fusion philosophy — sandwich construction, H-shaped screws, UNICO visible chronograph, integrated strap — and translates it into a 43mm square case with sharp, angular lines. This is Hublot’s fourth and newest case shape, completing the brand’s geometric range alongside round (Big Bang, Classic Fusion) and tonneau (Spirit of Big Bang). The square format required a completely redesigned case architecture: eight H-shaped screws instead of six, an angular bezel with flat facets and a square-to-round movement adapter to house the UNICO caliber. Available in titanium, black ceramic and King Gold, each replica hublot square bang delivers the boldest silhouette in the current Hublot catalog. Browse the full range below, or return to the Replica Hublot collection.

Key References

Square Bang UNICO Titanium (821.NX.0170.RX) — The core square chronograph. 43mm titanium case with black ceramic bezel, the HUB1280 UNICO caliber with flyback chronograph, column-wheel visible through the dial side and 72-hour power reserve. Eight H-shaped titanium screws secure the angular bezel — two more than the round Big Bang, required by the square geometry to distribute clamping pressure evenly across straight edges. Matte black dial with two chronograph registers. The purest expression of the Square Bang concept.
Square Bang UNICO Black Ceramic (821.CI.0170.RX) — Full black ceramic construction — case, bezel and buckle in sintered zirconium oxide. 43mm, same HUB1280 UNICO flyback chronograph with 72-hour reserve. The angular ceramic surfaces create sharp light reflections that differ from the soft curves of ceramic on the round Big Bang. The all-black monochrome with square geometry produces the most visually aggressive hublot square bang replica watch in the lineup.
Square Bang UNICO King Gold Ceramic (821.OM.0180.RX) — The luxury variant. 43mm King Gold case (18K red gold with 5% platinum) with black ceramic bezel. The square format amplifies the gold surface area compared to a round case of the same diameter, increasing the visual warmth and metal presence on the wrist. HUB1280 UNICO, 72-hour power reserve, flyback chronograph with dial-side visible column wheel.

Movement and Build

All Square Bang references use the HUB1280 UNICO caliber — an evolution of the HUB1242 flyback chronograph. The movement runs at 28,800 vph with a 72-hour power reserve from twin mainspring barrels. The column-wheel and chronograph coupling mechanism remain on the dial side, visible through the openworked dial. A square-to-round movement holder adapts the circular caliber to the square case cavity, maintaining the UNICO’s specifications without modification to the movement itself. Cases feature Hublot’s sandwich construction, but the square geometry requires eight H-shaped bezel screws (versus six on round models) for uniform pressure distribution along the straight edges. The bezel has flat faceted surfaces with chamfered edges — each facet is individually polished or satin-brushed depending on orientation. The integrated rubber strap connects to square-shaped lugs and follows the angular case lines before transitioning to a comfortable curved profile on the wrist underside. The One Click quick-change system is built into the lug attachment, allowing tool-free strap swaps. Case thickness is approximately 13.6mm — comparable to the round Big Bang UNICO.

How to Choose Your Square Bang

With 6 references, the choice is primarily material-driven. Titanium delivers lightweight daily wear with industrial-matte character and is the balanced starting point. Full Black Ceramic provides maximum scratch resistance and a monochrome angular aesthetic — the stealth option. King Gold Ceramic adds warmth and luxury-sport contrast, with the square format amplifying the gold surface area beyond what the round Big Bang shows. All three share the identical UNICO flyback chronograph at 72-hour reserve. If you prefer the round Big Bang format, explore the Big Bang. For the tonneau barrel shape, see the Spirit of Big Bang. For a thinner, dressier Hublot in round format, check the Classic Fusion.

Frequently Asked Questions

Why does the Square Bang have 8 screws instead of 6?

The Big Bang’s round bezel uses 6 H-shaped screws evenly spaced around the circumference. A circular shape distributes clamping pressure uniformly. The Square Bang’s straight-edged bezel creates uneven stress concentrations at the corners and along the flat edges. Eight screws — two per side — solve this by distributing clamping force more evenly along each of the four straight edges. The additional screws also become a visual design element: the 2-2-2-2 arrangement emphasizes the square geometry and differentiates the Square Bang from other Hublot lines at a glance.

How does the Square Bang compare to the Cartier Santos?

Both are square luxury sport watches with visible screws and integrated straps, but the design philosophy differs significantly. The Cartier Santos (1904 design, modern revival in 2018) is a historically rooted dress-sport watch — 39.8mm or 35.1mm, thin profile at 9.08mm, smooth bezel with exposed screws as an aesthetic callback to the Eiffel Tower rivets. The Hublot Square Bang is an industrial-modern sport chronograph — 43mm, 13.6mm thick, angular faceted bezel, UNICO flyback chronograph visible through the dial. The Santos uses an in-house caliber 1847 MC at 42-hour reserve; the Square Bang uses the UNICO at 72-hour reserve with flyback. The Santos is refined and historical; the Square Bang is bold and mechanical.

What is the square-to-round movement adapter?

The UNICO caliber is a round movement — like virtually all mechanical watch movements. The Square Bang’s case is square. The movement adapter is a precision-machined spacer ring that sits between the round movement and the square case cavity. It centers the movement within the square case, provides mounting points for the movement’s tabs, and transfers shock loads from the case to the movement’s anti-shock system. The adapter is typically made from the same material as the case (titanium or gold) and is invisible from outside the watch. This engineering solution allows Hublot to use the same UNICO caliber across round, tonneau and square case formats without modifying the movement architecture.

Is the Square Bang comfortable on the wrist despite the angular shape?

The 43mm case with angular corners has a different wrist dynamic than round watches. The corners extend further in diagonal directions — the effective case size is approximately 43mm edge-to-edge but 55mm corner-to-corner diagonally. However, Hublot addressed wearability through the caseback design: the underside of the Square Bang uses rounded, ergonomic contours that follow the wrist curvature, while only the top surface and bezel maintain the strict angular lines. The integrated rubber strap transitions from the square lug shape to a curved wrist-wrap within the first link. Wrists of 7 inches (18cm) and above typically accommodate the Square Bang comfortably.

Will Hublot expand the Square Bang collection?

Since the 2022 launch, Hublot has added material variants (titanium, ceramic, King Gold) and limited editions to the Square Bang range. The trajectory follows the same pattern as the Spirit of Big Bang after its 2014 launch — starting with UNICO chronograph references and gradually expanding to Tourbillon, Meca-10 and collaborative editions. Given the Square Bang’s position as Hublot’s fourth geometric family and the brand’s material experimentation strategy, additional references in sapphire crystal, carbon fiber and new colorways are expected. The current 6 models represent the foundation of what is designed to be a long-term collection pillar.

Related Collections

Explore more Hublot lines: Big Bang for the flagship round chronograph, Classic Fusion for the refined thin alternative, Spirit of Big Bang for the tonneau barrel shape. Compare square cases with Replica Cartier Santos. Browse the full Replica Hublot catalog for all 76 models.